Jacquard-machine.



T. H. HALTON. JAGOUARD MACHINE. APPLICATION FILED MAY 16. 1913.

1,204,864. Patented Nov. 14, 1916 Wffmesses hmanior Thomas mm I, {NEED STATES PATE OFFICE.

THOMAS H. HALToN, or PHILADELPHIA, PEN sYLvAN-IA, AssIGNon T TnoiviAs; HALTONS soNs, or PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENN,

. SYLVANIA.

JAGQUARD-MAGHINE.

Specification of Letters Patent.

Patented Nov. 14, 1916.

Application filed May 16, 1913. SerialNo. 768,020.

To all whom it may concern.

Be it known that I, THOMAS H..HAL'roN, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Jacquard-Machines, of which the following is a specification.

One object of my invention is to prevent interference with the proper operation of a jacquard machine by reason of the engagement of the hooked lifters of the machine with one another, and another object is to simplify the construction and perfect the operation of the retracting springs which act upon the lifter controlling needles. These objects I attain in the manner hereinafter set forth, reference being had to the accompanying drawing, in which-- Figure 1 is a longitudinal sectional view of sufficient of a Jacquard machine to illustrate my invention; Fig. 2 is a transverse section of part of the same on the line w-a, Fig. 1, and Fig. 3 is a horizontal section on an enlarged scale of part of the machine.

In Fig. 1 of the drawing, 1 represent the hooked lifters, 2 the controlling needles therefor, and 3 the griff bars, of an ordinary jacquard machine, the cards serving to operate the needles so as to press back out of the path of the grifi' bars 3 the lifters corresponding to those harness tails which are not to be lifted and leaving in position to engage the grift' bars those lifters which correspond with the harness tails which have to be raised.

In the operation of the machine a certain amount of lateral vibration of the lifters 1 cannot be prevented and in machines of fine index this lateral vibration frequently causes the hooked upper ends of adjacent lifters to engage one another so that the lifting of either of them will also cause the other to be lifted whether or not such lift is required by the design, and this results in spoiling the weave in the fabric which is being produced. In order to overcome this defect I introduce, between adjoining longitudinal rows of lifters, separator rods 7 located as closely as possible to the hooked upper ends of the lifters and serving to prevent engagement of said hooked upper ends by any possible lateral vibration of the lifters. The preferable method of supporting the separator rods 7 is to provide at front and rear of the set of griff bars 3, special bars 3 which are deeper than the others and are perforated for the reception of the separator rods 7 longitudinal retention of the latter being effected .by hooking each of the rods at one end as shown at 8 in Fig. 1, and securing to that end griff bar 3 a retaining plate 9 bearing upon said hooked ends 8 as shown in Fig. 1.

Each of the needles 2 is vertically sup ported near its rear end by means of transverse rods 10 one for each horizontal row of needles and each needle is retained in proper lateral position by means of vertical bars 11 one for each vertical row of needles, said bars 11 passing through loops 12 one at the rear end of each needle, as shown in Fig. 3. The forward portion of this loop 12 is expanded laterally so as to form shoul ders 13 upon which bears the front end of a spring 1a, the latter surounding the looped portion of the needle and bearing at its rear end against the vertical bar 11 so that when the needle is pushed rearwardly the spring will be compressed and when the pressure of the card is removed from the front end of the needle the reaction of the spring 14: will restore the same to its normal position. These springs are usually uniform from end to end but in order to increase the period of usefulness of the spring as well as to enable it to better perform its intended function I dispose the coils at the front end of the spring more closely than throughout the remainder of the spring and also reduce the diameter of these coils to a limited extent, as shown for instance at 15 in Fig. 3, the result being that the forward or bearing end of the spring is strengthened and stiffened without detracting in any way from the resiliency of said spring.

The diameter of the closely coiled portion 15 of the spring is preferably such in respect to the width of the rear loop 12 of the needle that some little force will be needed in order to move said closely coiled portion of the spring over the loop, whereby, when the spring is once properly adjusted into position, it will not fall off of the needle in the handling of the same prior to its introduction into the machine.

The increase in stiffness and reduction in diameter of the forward end of the spring 1 L also overcomes another objection to which the ordinary spring is subject, namely, the riding of the forward end of the spring over the shouldered portion 13 of the needle so that it cannot perform its intended function.

My improved conformation of, the forward end ofthe spring-efi'ectuallyl prevents. any such yield of the same under the piessure ofthe shouldered portion 13 of theoneedle as Would permit it to ride over said shouldered portion,

I claim:

The combination, in a Jacquard machine, of longitudinal rows of hooked lifters, a set of grin bars, the end bars of the set being deeper than the others, separator rods interposed between the longitudinal rows of lifters and adapted to openings inthe depend- Co'pies of this patent may be obtained for ing portions of the end grifl bars, each of saidseparatonnods being hookedv at one. end to heal: against the 'faceyofi its corresponding g'rifi bar and being held in place longitudinallyby an outer retaining plate secured to said end grifl bar.

testimony whereof, I have. signed my name to this specification, in the presence of two subscribing Witnesses.

THOMAS H. HALTON.

Witnessesb J AMEs Wooo'HEAD, PAULINE E LIII S.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

